A study on broadband noise impact Of wind turbines on plain and complex Terrain in india

Abstract

From the Californian era to the construction of huge onshore and newlineoffshore wind farms worldwide, wind energy has embarked on a remarkable newlinestory by overcoming several challenges towards achieving the target of 500 newlineGW by the end of 2030. As of 30th November 2020, India holds the fourth newlineposition in terms of installed wind power with an installed capacity of 38 GW. newlineThe country has set itself a national target of 60 GW by 2022. Though technoeconomically newlinematured, wind energy still leaves small scale impacts on the newlineenvironment and human health. newlineThough the advancement in the technology allows the operation of newlinewind turbines at much quieter levels, still the noise emitted is a cause of newlineconcern, especially to the habitats close to the installations. Even though the newlinenoise levels can be measured, like other environmental concerns, the newlineperception of its impact is subjective and cannot be determined easily. Noise newlineregulations in the countries, define the upper bounds of noise to which people newlinemay be exposed to. These limits vary from country to country and may be newlinedifferent for day and night times. No specific characterization and control newlinelevels for wind turbine noises in habitat have been specified. Generally, the newlinenoise produced from WTs is broadband in nature. Aerodynamic noise from newlinewind turbines has low-frequency components below 100Hz. newlineRealizing the importance of this need and the impact of the advent of newlinewind energy in the country, the very first attempt of its kind of study newlineconducted in India, and considering the geography of the country as well as newlinethe location of wind farms there were lots of limitations while conducting the newlinestudy. newline